INVT Goodrive100-PV Series - Page 15

Goodrive100-PV Series Solar Pumping VFD Installation guidelines
13
Category
Terminal
symbol
Terminal name
Terminal function
S4
Single/two phase
algorithm
switching
frequency, and switching-off
indicates input controlled by the
keypad.)
S2: It connects to the
high-water switch of the
normally open contact by
default.
S3: It connects to the
low-water switch of the
normally closed contact.
S4: A high electrical level
corresponds to the
single-phase algorithm. A low
electrical level corresponds to
the two-phase algorithm.
Communication
RS485+
RS485-
485
communication
485 communication terminals,
using the Modbus protocol
422TX+
422TX-
422RX+
422RX-
422
communication
Communication terminals
special for the boost module.
Relay output
RO1A
(ROA)
Normally open
contact of relay 1
1. Contact capacity:
3A/AC250V, 1A/DC30V
2. They cannot be used for
high frequency switch output.
During the application of auto
power frequency & PV
switching, the AC input
contactor coil is controlled by
the normally closed contact of
the relay.
RO1B
(ROB)
Normally closed
contact of relay 1
RO1C
(ROC)
Common terminal
of relay 1